Valve body structure convenient to weld and position

Abstract

The utility model discloses a valve body structure convenient for welding and positioning, which comprises a valve body and a clamping sleeve, the valve body is provided with a mounting groove, the lower end of the clamping sleeve is provided with a convex ring abutted in the mounting groove, a valve ball is rotatably arranged in the valve body, a valve rod extending to the outer side of the valve body is inserted on the valve ball, and the clamping sleeve is sleeved on the periphery of the valve rod. The lower end of the clamping sleeve is provided with the protruding ring which extends downwards and abuts against the mounting groove of the valve body, the thickness of the protruding ring is small, the lower end face of the protruding ring is horizontally attached to the mounting groove, the protruding ring is horizontally placed in the mounting groove to be welded, the clamping sleeve can be welded and fixed to the mounting groove more horizontally, and the welding quality of the clamping sleeve welded and fixed to the valve body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve body structure which is convenient for welding and positioning. Background Art

[0002] A ball valve is a valve that uses a ball as the opening and closing element, with the valve stem driving the ball to rotate about its axis. It is commonly used to regulate and control fluids within pipelines. Existing ball valves typically have a ferrule welded to the valve body, which controls the handle's full-open or full-close position via a stopper on the ferrule.

[0003] Figures 1 to 3 This is a schematic diagram of the existing ferrule welded to the valve body, refer to Figures 1 to 3 As shown, in order to facilitate the welding of the ferrule 2 to the valve body 1, welding protrusions 14 for welding are provided on the valve body 1, and the welding protrusions 14 are point-to-surface contact welded with the welding surface 25 on the ferrule 2 (the smaller the contact area of ​​the welding, the easier it is to weld, melt, and fix, and the smaller the required welding current is, and a smaller welding current is less likely to cause the welded area to turn black and oxidize). However, the ferrule 2 placed in point-to-surface contact as described above is prone to tilting during placement and welding, which means that the ferrule 2 cannot be reliably horizontally welded and fixed on the valve body 1, thereby affecting the welding and fixing quality of the ferrule 2. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a valve body structure that is convenient for welding and positioning.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A valve body structure that is easy to weld and position, including a valve body and a ferrule, a mounting groove is provided on the valve body, the lower end of the ferrule is provided with a convex ring that abuts the mounting groove, a valve ball is rotatably arranged in the valve body, a valve stem extending to the outside of the valve body is inserted into the valve ball, and the ferrule is arranged on the outer periphery of the valve stem.

[0007] Preferably, a clamping block is fixed on one side of the clamping sleeve, and a clamping groove corresponding to the position of the clamping block is provided on the valve body, and the clamping block is clamped and limited in the clamping groove.

[0008] Preferably, the ferrule is provided with a limit block distributed opposite to the clamping block, and the limit block and the valve body are arranged parallel to each other in the upper and lower directions.

[0009] Preferably, the outer periphery of the ferrule is fitted onto the side wall of the mounting groove.

[0010] Preferably, a mounting hole corresponding to the mounting groove is provided on the valve body, and the valve stem passes through the mounting hole and is inserted inwardly onto the valve ball.

[0011] Preferably, the valve stem is provided with an insert rod, the valve ball is provided with a socket adapted to the insert rod, and the insert rod is plugged and fixed in the socket.

[0012] Preferably, the valve stem is provided with an abutment ring extending toward the outer periphery, and the lower end of the ferrule abuts against the abutment ring.

[0013] Preferably, the ferrule is provided with a through hole coaxially arranged with the valve stem, and the valve stem is fitted in the through hole.

[0014] Preferably, an annular groove for installing a sealing ring is provided on the outer periphery of the valve stem, and the outer periphery of the sealing ring abuts against the side wall of the through hole.

[0015] The beneficial effects of the utility model are:

[0016] 1. A convex ring is provided at the lower end of the ferrule, extending downward and abutting against the mounting groove of the valve body. The convex ring is relatively thin and its lower end face is horizontally fitted into the mounting groove. By placing the convex ring horizontally in the mounting groove for welding, the ferrule can be welded and fixed to the mounting groove more horizontally, thereby ensuring the welding quality of the ferrule fixed to the valve body.

[0017] 2. A clamping block is fixed on one side of the ferrule, which is inserted into the slot to position and limit the horizontal rotation of the ferrule, thereby improving the accuracy of the ferrule welding and ensuring the quality and efficiency of the ferrule welding fixation;

[0018] 3. The clamping block and the clamping groove are matched to each other so that the ferrule can be more firmly welded and fixed on the valve body, making the welding and use of the ferrule more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the existing valve body structure;

[0020] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0021] Figure 3 This is a schematic diagram of the structure of the existing valve body after welding;

[0022] Figure 4 It is a structural diagram of the utility model;

[0023] Figure 5 It is a cross-sectional schematic diagram of the utility model;

[0024] Figure 6 for Figure 5 A magnified schematic diagram of point B in the middle;

[0025] Figure 7 for Figure 6The enlarged schematic diagram of point C in the middle;

[0026] Figure 8 This is a structural diagram of the ferrule of the utility model;

[0027] Figure 9 This is a schematic diagram of the structure of the utility model after welding.

[0028] In the figure: valve body 1, mounting hole 11, mounting groove 12, clamping groove 13, welding protrusion 14, ferrule 2, convex ring 21, clamping block 22, limit block 23, through hole 24, welding surface 25, valve stem 3, abutment ring 31, insert rod 32, ring groove 33, sealing ring 4, valve ball 5, and insertion hole 51. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0030] In the description of this specification, the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0031] like Figures 4 to 9 As shown, a valve body structure that is convenient for welding and positioning includes a valve body 1 and a ferrule 2. A valve ball 5 is rotatably arranged in the valve body 1, and a valve stem 3 extending to the outside of the valve body 1 is inserted into the valve ball 5. The ferrule 2 is coaxially arranged with the valve stem 3, and the ferrule 2 is sleeved on the outer periphery of the valve stem 3.

[0032] Specifically, a mounting groove 12 is provided on the valve body 1, the contour of the mounting groove 12 is adapted to the outer contour of the ferrule 2, the outer periphery of the ferrule 2 is fitted to the side wall of the mounting groove 12, and the lower end of the ferrule 2 is provided with a convex ring 21 abutting against the mounting groove 12, the thickness of the convex ring 21 is relatively thin, and the lower end surface of the convex ring 21 is horizontally fitted to the mounting groove 12.

[0033] The valve stem 3 is provided with an abutment ring 31 extending toward the periphery, and the lower end of the ferrule 2 abuts against the abutment ring 31, that is, when the ferrule 2 is welded and fixed to the valve body 1, the convex ring 21 melts under the action of the welding current and presses the ferrule 2 downward so that the ferrule 2 can abut downward against the abutment ring 31, and at the same time, the melted convex ring 21 is filled between the mounting groove 12 and the lower end face of the ferrule 2, so as to realize the welding and fixing of the ferrule 2 to the valve body 1.

[0034] By placing the convex ring 21 horizontally on the mounting groove 12 for welding, the ferrule 2 can be welded and fixed to the mounting groove 12 more horizontally, thereby ensuring the welding quality of the ferrule 2 welded to the valve body 1. Since the thickness of the convex ring 21 is relatively thin, a smaller welding current can be used to weld the ferrule 2 to the valve body 1, so as to avoid problems such as blackening and oxidation at the welding point between the ferrule 2 and the valve body 1.

[0035] Furthermore, a clamping block 22 is fixed on one side of the ferrule 2, and a clamping groove 13 corresponding to the position of the clamping block 22 is provided on the valve body 1. The clamping block 22 is clamped and limited in the clamping groove 13 to position and limit the horizontal rotation of the ferrule 2, thereby improving the accuracy of the welding of the ferrule 2, so that the ferrule 2 can be welded and fixed more quickly and reliably, ensuring the quality and efficiency of the welding and fixing of the ferrule 2.

[0036] And by matching the clamping block 22 with the clamping groove 13, when the clamping sleeve 2 is welded, the melted convex ring 21 will partially penetrate between the clamping block 22 and the clamping groove 13, and then the clamping block 22 is welded and fixed to the clamping groove 13, so that the clamping sleeve 2 can be more firmly welded and fixed to the valve body 1, making the welding and use of the clamping sleeve 2 more reliable, and the clamping sleeve 2 is less likely to be broken off or damaged by external force.

[0037] The ferrule 2 is provided with a limit block 23 which is distributed opposite to the block 22. The block 22 is provided on the lower side of the ferrule 2, and the limit block 23 is provided on the upper side of the ferrule 2. The limit block 23 and the valve body 1 are arranged parallel to each other above and below. The limit block 23 is used to abut and limit the handle installed on the valve stem 3. When the handle is rotated to the extreme position of full open or full closed, the handle is limited by the abutment of the limit block 23, so that the handle can be parallel or 90° vertical to the valve body 1. That is, the welding fixation of the ferrule 2 is carried out by horizontal rotation of the block 22 to synchronously position the installation position of the limit block 23, so as to ensure the standardization of the installation and use of the handle when the valve stem 3 is subsequently installed with the handle.

[0038] The valve body 1 is provided with a mounting hole 11 corresponding to the mounting groove 12, and the mounting hole 11 is concentrically arranged with the mounting groove 12. The valve stem 3 passes through the mounting hole 11 and is plugged inwardly onto the valve ball 5, and the valve stem 3 is provided with a plug rod 32. The cross section of the plug rod 32 can be square, that is, the plug rod 32 is a square rod. The valve ball 5 is provided with a socket 51 adapted to the plug rod 32, and the plug rod 32 is plugged and fixed in the socket 51. Then, by rotating the valve stem 3, the valve ball 5 is driven to rotate, and the valve ball 5 is used to control the opening and closing of the valve.

[0039] The ferrule 2 is provided with a through hole 24 coaxially arranged with the valve stem 3, and the valve stem 3 is fitted in the through hole 24. Furthermore, the outer periphery of the valve stem 3 is provided with an annular groove 33 for installing the sealing ring 4. The outer periphery of the sealing ring 4 abuts against the side wall of the through hole 24, and the sealing ring 4 is in interference fit with the ferrule 2 to improve the sealing between the ferrule 2 and the valve stem 3.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A valve body structure convenient for welding and positioning, comprising a valve body (1) and a ferrule (2), characterized in that: The valve body (1) is provided with a mounting groove (12), the lower end of the ferrule (2) is provided with a convex ring (21) abutting against the mounting groove (12), a valve ball (5) is rotatably arranged in the valve body (1), a valve stem (3) extending to the outside of the valve body (1) is inserted into the valve ball (5), and the ferrule (2) is sleeved on the outer periphery of the valve stem (3).

2. A valve body structure that facilitates welding and positioning according to claim 1, characterized in that: A clamping block (22) is fixed on one side of the clamping sleeve (2), and a clamping groove (13) corresponding to the position of the clamping block (22) is provided on the valve body (1), and the clamping block (22) is clamped and limited in the clamping groove (13).

3. A valve body structure that facilitates welding and positioning according to claim 2, characterized in that: The clamping sleeve (2) is provided with a limiting block (23) distributed opposite to the clamping block (22), and the limiting block (23) and the valve body (1) are arranged parallel to each other in the upper and lower directions.

4. A valve body structure that facilitates welding and positioning according to any one of claims 1 to 3, characterized in that: The outer periphery of the ferrule (2) is fitted on the side wall of the mounting groove (12).

5. A valve body structure that facilitates welding and positioning according to any one of claims 1 to 3, characterized in that: The valve body (1) is provided with a mounting hole (11) corresponding to the mounting groove (12); the valve stem (3) passes through the mounting hole (11) and is inserted inwardly onto the valve ball (5).

6. A valve body structure that facilitates welding and positioning according to any one of claims 1 to 3, characterized in that: The valve stem (3) is provided with an insert rod (32), the valve ball (5) is provided with an insert hole (51) adapted to the insert rod (32), and the insert rod (32) is inserted and fixed in the insert hole (51).

7. A valve body structure that facilitates welding and positioning according to any one of claims 1 to 3, characterized in that: The valve stem (3) is provided with an abutment ring (31) extending toward the outer periphery, and the lower end of the ferrule (2) abuts against the abutment ring (31).

8. A valve body structure that facilitates welding and positioning according to any one of claims 1 to 3, characterized in that: The ferrule (2) is provided with a through hole (24) coaxially arranged with the valve stem (3), and the valve stem (3) is fitted in the through hole (24).

9. A valve body structure that facilitates welding and positioning according to claim 8, characterized in that: An annular groove (33) for mounting a sealing ring (4) is provided on the outer periphery of the valve stem (3), and the outer periphery of the sealing ring (4) abuts against the side wall of the through hole (24).

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